France has conducted 210 nuclear weapon tests, more than the United Kingdom, China, India, and North Korea combined! This is scarcely a fifth of the amount conducted by the United States, however, who have conducted roughly 1,054 tests.

Cats often rub up against people and furniture to lay their scent and mark their territory. They do it this way, as opposed to the way dogs do it, because they have scent glands in their faces.

Leonardo Da Vinci never signed or dated his most famous painting, the Mona Lisa.